2. 外语
  3. A.using photos B.description of the HTML page C.current popular search engines D.document search E.information i

A.using photos B.description of the HTML page C.current popular search engines D.document search E.information i

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问题     A.using photos
    B.description of the HTML page
    C.current popular search engines
    D.document search
    E.information in images
    F.machine vision systems
The new system was found more effective in document search than the______.
选项
答案C
解析 根据最后一段“…produced a 30 percent improvement in precision over the original search engine…”可知,新系统在文件搜索上比当前通常使用的搜索引擎更高效。
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